A random integer from 65 to 69 ('A' to 'E') and store it to AL register

Hi I'm new at Assembly language, and I tried to make a random integer from 65 to 69 ('A' to 'E') and store it to AL register. This is my code.

;Write a program that displays similar to Color_Matrix_Nested_Loop but without Delay call.   However this time, you must implement it with a single loop, not nested loops.   Use any conditional jump as you want.    INCLUDE Irvine32.inc    .data  value1 DWORD ?  default = lightGray + (black*16)    .code  main PROC  mov ecx, 256  mov ebx, 00h    L1:      mov eax, ebx      call SetTextColor      call GetChFromABCDE      call WriteChar      mov dl, bl      test bl, 00001111b      jnz next      call crlf  next:      add bl, 1h      loop L1     mov eax, default  call SetTextColor    exit  main ENDP    ;------------------------------------------------------------  GetChFromABCDE PROC USES eax  ;  ; Generates a char randomly from 'A','B','C','D','E'  ; Receives: Nothing  ; Returns: The char ASCII code in AL  ;------------------------------------------------------------    mov eax, 5          ; get random 0 to 4  call RandomRange    ;  mov eax, 41h        ; make range 65 to 69  mov value1, eax  mov al, BYTE PTR value1    GetChFromABCDE ENDP    END main  

Whenever I try to trace the problem, a debugger says 'Source not available' and 'Source information is missing from the debug information for this module'. I guess the problem part is this.

mov value1, eax  mov al, BYTE PTR value1  

My professor says try to use registers instead of memories as possible as I can, but this time I have no idea to fix this problem..

https://stackoverflow.com/questions/66512510/a-random-integer-from-65-to-69-a-to-e-and-store-it-to-al-register March 07, 2021 at 09:55AM